Fix $output result inconsistency #2955
Merged
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修复
exec()
协程化后,$output
值与非协程版不一致问题。php 的
exec()
会把$output
中每个成员的右侧空白字符去除,并且把行尾的空行那个成员去掉。这个PR把协程化后的
$output
值,与非协程版保持一致